Meeting Agenda

Date:	July 16, 2007
Location:	DC 1304
Time:	1:30
Chair:	Curtis Luk

1. Changes to the Agenda - additions or deletions

2. Coffee Hour

Coffee hour last week:: Vladimir- thanks!
Coffee hour this week:: Christine
Coffee hour next week:: Curtis

3. Forthcoming

Date:	July 23, 2007	July 30, 2007	August 13, 2007	August 20, 2007
Location:	DC 1304 1:30	DC 2303(Lab) 1:30	DC 1304 1:30	DC 1304 1:30
Chair:	Jaime Ruiz	Christine Szentgyorgyi	Martin Talbot	Mike Terry
Technical Presentation:	Yingbin Liu	Curtis Luk	Jaime Ruiz	Christine Szentgyorgyi

4. Technical Presentation

Yi Lin	Title : Nonuniform Segment Compression of Motion Capture Data Abstract: I am going to introduce applying a scale-space nonuniform segmentation by anisotropic diffusion to the application of motion capture data compression. The basic idea is each degree of freedom of a motion clip is smoothed by an anisotropic diffusion process and then divided into segments at the zero crossings of the second derivative in the smoothed data. Then such a segment is approximated by a cubic Bezier curve. The approximation produces a hierarchical lists of cubic control points, which can be further compressed by a hierarchical coding method. The coding method uses the points in the coarse scales to predict the ones in the finer scales. In this end, I will compare our work with wavelet compression methods which have the best compression rates to date.

Yi Lin

Title : Nonuniform Segment Compression of Motion Capture Data

Abstract:
I am going to introduce applying a scale-space nonuniform segmentation by anisotropic diffusion to the application of motion capture data compression. The basic idea is each degree of freedom of a motion clip is smoothed by an anisotropic diffusion process and then divided into segments at the zero crossings of the second derivative in the smoothed data. Then such a segment is approximated by a cubic Bezier curve. The approximation produces a hierarchical lists of cubic control points, which can be further compressed by a hierarchical coding method. The coding method uses the points in the coarse scales to predict the ones in the finer scales. In this end, I will compare our work with wavelet compression methods which have the best compression rates to date.

5. Discussion Items

None so far...

6. Action Items

Meetings in CGL on 30 July

7. Conferences and Special Journal Issues

8. Directors' Meeting

9. Seminars and Events

2007 Jul 17, 19:00 , AL 116, Computer Science Seminar: Bjrane Stroustrup, designer and original implementer of C++; C++0x- An Overview

2007 Jul 19, 14:00, DC 1331,Computer Graphics Research Group PhD Seminar: Jiwen Huo, PhD candidate, David R. Cheriton School of Computer Science, Univ. Waterloo; Methodology to Evaluate Boolean Query Representations

2007 Jul 20, 15:00, DC 1304, Information Retrieval Seminar: Alistair Moffat, University of Melbourne, Australia; Rank-Biased Precision for Measurement of Retrieval Effectiveness

2007 Jul 23, 10:00, DC 1331, Computer Graphics Research Group Seminar: Elodi Fourquet, PhD candidate, David R. Cheriton School of Comp. Sci., Univ. Waterloo; On the Emperical Limits of Billboard Rotation

2007 Jul 25, 13:30, DC 1331, Algorithms and Complexity Group PhD Seminar: Burkay Genc, PhD candidate, David R. Cheriton School of Computer Science, Univ. Waterloo; Reconstructing Orthogonal Polyhedra from Putative Vertex Sets

Also see other Math and CS postings.